Remove the SkCanvas comment API

tests/RecorderTest.cpp

Index: tests/RecorderTest.cpp
diff --git a/tests/RecorderTest.cpp b/tests/RecorderTest.cpp
index e67de58acbd73a15964ae03cad27c4d6ddc5eb2f..829fe3e229d12c69c20957bd4e9dc081558b34d6 100644
--- a/tests/RecorderTest.cpp
+++ b/tests/RecorderTest.cpp
@@ -50,25 +50,6 @@ DEF_TEST(Recorder, r) {
     REPORTER_ASSERT(r, 1 == tally.count<SkRecords::DrawRect>());
 }
 
-// All of Skia will work fine without support for comment groups, but
-// Chrome's inspector can break.  This serves as a simple regression test.
-DEF_TEST(Recorder_CommentGroups, r) {
-    SkRecord record;
-    SkRecorder recorder(&record, 1920, 1080);
-
-    recorder.beginCommentGroup("test");
-        recorder.addComment("foo", "bar");
-        recorder.addComment("baz", "quux");
-    recorder.endCommentGroup();
-
-    Tally tally;
-    tally.apply(record);
-
-    REPORTER_ASSERT(r, 1 == tally.count<SkRecords::BeginCommentGroup>());
-    REPORTER_ASSERT(r, 2 == tally.count<SkRecords::AddComment>());
-    REPORTER_ASSERT(r, 1 == tally.count<SkRecords::EndCommentGroup>());
-}
-
 // Regression test for leaking refs held by optional arguments.
 DEF_TEST(Recorder_RefLeaking, r) {
     // We use SaveLayer to test: